On Thu, Apr 26, 2012 at 10:31 AM, Jim Miller KG0KP
<[email protected]> wrote:
> Yes, my cfglineout was set to "nor 005" and turning it up to 20 brought the
> signal up considerably and continuing up made snow appear in the background
> so backed it down.
Noise on the waterfall is normal - it's the same noise you can hear
with your ears.
> However, and this is not a K3 problem, If I back down the gain in the
> program to center it lowers the signals as well and I don't know where it
> should actually be set. Using 20 but wondering if I am missing some I
> should be hearing. I will have to play with it unless somebody has an
> opinion on the readings I should have. They say -15 and up some. Is that
> supposed to be "normal" or is it way too low.
With JT65-HF, the recommendation is to adjust the audio levels until
you see approximately 0 (mid-scale) on the "Audio Input Levels"
meter(s) when receiving only noise. When you're receiving signals, the
meter should go up from 0 (although maybe not by much, if it's a weak
signal).
Signal reports are given in dB relative to a sampling of the entire
audio passband noise - nothing to do with the Audio Input Level
numbers really.
73,
~iain / N6ML
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